Answer by Kellycheeseburger10. Confidence votes 86. When a light is shined into an eye the pupil contracts gets smaller because the eye doesn't need all the light being presented to it. If the light is taken away the pupil dilates. PS like the eye gets bigger in the dark.
The ancient Egyptians did not know the hard setting lime plaster invented by the Greeks, but used instead a mixture of gypsum and quartz with small amounts of lime [5] when working with stone.This was not as disastrous in the dry climate of Egypt as it would have been under wetter conditions.ost of the ancient Egyptian buildings have disappeared leaving no trace. Built of sun baked bricks made of Nile mud and straw, houses, palaces and city walls crumbled when they stopped being looked after.
Reactions between limestone and oil shale during spontaneous combustion occurred in Israel to form a natural deposit of cement compounds. 3000 BC. Egyptians used mud mixed with straw to bind dried bricks. Also furthered the discovery of lime and gypsum mortar as a binding agent for building the Pyramids. 3000 BC. Used cementitious materials to hold bamboo together in their boats and in the Great Wall.